Alpha-lipoic acid (ALA) has been used as an antioxidant for the treatment of diabetes and HIV. It also has been used for cancer, liver ailments, and various other conditions.
- Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.
- Although not all side effects are known, alpha-lipoic acid is thought to be possibly safe when taken as directed.
- Stop taking alpha-lipoic acid and call your doctor at once if you have:
- low blood sugar–headache, hunger, weakness, sweating, confusion, irritability, dizziness, fast heart rate, or feeling jittery; or
- a light-headed feeling, like you might pass out.
Common side effects may include:
- nausea; or
- skin rash.